March 2012
Volume 53, Issue 14
Free
ARVO Annual Meeting Abstract  |   March 2012
Comparative Study Of Surgical Procedures Performed On The Inferior Oblique Muscle
Author Affiliations & Notes
  • Anush Gharibyan
    Malayan Ophthalmology Center, Yerevan, Armenia
  • Ruzanna Harutyunyan
    Malayan Ophthalmology Center, Yerevan, Armenia
  • Ofelya Gevorgyan
    Ophthalmology, Malayan Eye Center, YSMU, Yerevan, Armenia
  • Footnotes
    Commercial Relationships  Anush Gharibyan, None; Ruzanna Harutyunyan, None; Ofelya Gevorgyan, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science March 2012, Vol.53, 1772. doi:
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      Anush Gharibyan, Ruzanna Harutyunyan, Ofelya Gevorgyan; Comparative Study Of Surgical Procedures Performed On The Inferior Oblique Muscle. Invest. Ophthalmol. Vis. Sci. 2012;53(14):1772.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: : To compare the surgical procedures performed on the lower oblique muscle in the cases of presence of vertical component of squint.

Methods: : It is a retrospective review of charts of patients who underwent strabismus surgery in the Pediatric Department at S.V. Malayan Ophthalmological Center in the last 2 years. The age of patients ranged from 4 to 12 years old.20 patients have undergone surgery for accommodative strabismus accompanied with vertical component during the period between October 1st 2009 and October 1st 2011.In cases of horizontal deviation exceeding 30-40 prismatic diopters, the surgery was performed in two stages:1. Recession of medial rectus muscle bilaterally2. Transposition or myotomy after one or two yearsIn cases of horizontal deviation less than 30 prizmatic diopters, only the myotomy or transposition of inferior oblique muscle was performed, followed by prescription of glasses aiming to achieve binocular vision.In 10 patients who had divergent strabismus of 20-30 diopters with concomitant primary "V" syndrome, lateral rectus muscle recession and inferior oblique muscle myotomy or transposition were performed. In case of deviation less than 20 diopters, transposition of inferior oblique muscle was performed.

Results: : After comparison of the results of permormed surgical procedures, we concluded:1. The most effective method of correction of vertical deviation caused by hypofunction of superior oblique muscle or hyperfunction of inferior oblique muscle is the primary transposition of inferior oblique muscle that provides conditions for coordinated eye movements and binocular vision.2. Better results can be achieved by working simultaneously on bilateral inferior oblique muscles.3. Transposition or myotomy of inferior oblique muscle has advantages over "Z" myotomy or recession ( due to remaining "V" syndrome).

Conclusions: : Our study showed the high efficacy of inferior oblique muscle anteriorisation for the complex surgical treatment of vertical component of strabismus associated with hyperfunction of the inferior oblique muscle.

Keywords: strabismus: treatment • strabismus: treatment • strabismus: treatment 
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